Climate and monthly weather forecastDumfries, VA
Climate and monthly weather forecast
Weather in January
January, like December, in Dumfries, Virginia, is an icy winter month, with an average temperature ranging between min 27.5°F (-2.5°C) and max 41.5°F (5.3°C). The month of January, characterized by an average high of 41.5°F (5.3°C) and a low of 27.5°F (-2.5°C), is recognized as the coldest. Weather in January »Weather in February
February, the last month of the winter in Dumfries, is a chilly month, with an average temperature ranging between min 30°F (-1.1°C) and max 46°F (7.8°C). Stepping into February, Dumfries records an average high-temperature of a frosty 46°F (7.8°C), almost consistent with January. Weather in February »Weather in March
March, the first month of the spring in Dumfries, is a fresh month, with an average temperature ranging between max 54.1°F (12.3°C) and min 37°F (2.8°C). With the onset of March, Dumfries experiences a subtle temperature shift, with the average high-temperature moving from a frosty 46°F (7.8°C) in February to a fresh 54.1°F (12.3°C). Weather in March »Weather in April
April in Dumfries, Virginia, is a refreshing spring month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 66.2°F (19°C). April's onset brings a temperature rise, moving from a fresh 54.1°F (12.3°C) in March to a comfortable 66.2°F (19°C). Weather in April »Weather in May
May, the last month of the spring in Dumfries, is a warm month, with an average temperature fluctuating between 75.6°F (24.2°C) and 56.3°F (13.5°C). Dumfries's weather shows a temperature rise with the arrival of May, moving from an enjoyable 66.2°F (19°C) in April to a warm 75.6°F (24.2°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Dumfries, Virginia, with temperature in the range of an average high of 83.5°F (28.6°C) and an average low of 63.7°F (17.6°C). As June arrives, Dumfries's weather shows a minor increase in high-temperatures, edging from May's warm 75.6°F (24.2°C) to a still moderately hot 83.5°F (28.6°C). Weather in June »Weather in July
July is a hot summer month in Dumfries, Virginia, with an average temperature ranging between max 88.7°F (31.5°C) and min 67.8°F (19.9°C). Dumfries experiences its highest average temperatures in July, reaching a peak of 88.7°F (31.5°C) and a minimum of 67.8°F (19.9°C). During July, the heat index is computed to be a blistering 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Dumfries, Virginia, with an average temperature fluctuating between 66°F (18.9°C) and 86.2°F (30.1°C). August experiences an average high-temperature of a still hot 86.2°F (30.1°C), barely different from July's 88.7°F (31.5°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Dumfries, Virginia, with an average temperature fluctuating between 61°F (16.1°C) and 79.3°F (26.3°C). As September commences, the average high-temperature subtly reduces, transitioning from a tropical 86.2°F (30.1°C) in August to a warm 79.3°F (26.3°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Dumfries, Virginia, with an average temperature varying between 50.5°F (10.3°C) and 67.1°F (19.5°C). Dumfries's average high-temperature decreases in October, falling from a moderately hot 79.3°F (26.3°C) in September to a refreshing 67.1°F (19.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Dumfries, Virginia, with an average temperature fluctuating between 55.2°F (12.9°C) and 39°F (3.9°C). The shift from October to November involves a decrease in the average high-temperature, dropping from a refreshing 67.1°F (19.5°C) to a cool 55.2°F (12.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Dumfries, Virginia, with an average temperature ranging between min 33.6°F (0.9°C) and max 46.9°F (8.3°C). Dumfries experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a fresh 55.2°F (12.9°C) in November to a chilly 46.9°F (8.3°C). Weather in December »Updated: Aug 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Dumfries, January registers the lowest temperatures, averaging 41.5°F (5.3°C) at the peak and 27.5°F (-2.5°C) at the lowest.
January, April and July, with an average relative humidity of 73%, are the least humid months in Dumfries.
The month with the least rainfall is January, when the rain falls for 9.4 days and typically collects 1.97" (50mm) of precipitation.
Throughout the year, there are 155.6 rainfall days, and 31.61" (803mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
January is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.52" (64mm) of snow.
In Dumfries, during the entire year, snow falls for 13.5 days and aggregates up to 8.23" (209mm) of snow.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
The months with the least sunshine are February and December, with an average of 5.1h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through October are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June has the longest days of the year in Dumfries, with an average of 14h and 48min of daylight.
In Dumfries, July registers the highest temperatures, averaging 88.7°F (31.5°C) at the peak and 67.8°F (19.9°C) at the lowest.
The month with the most sunshine is July, with an average of 10.5h of sunshine.
August is the month with the most rainfall. Rain falls for 16 days and accumulates 3.66" (93mm) of precipitation.
October and December, with an average relative humidity of 78%, are most humid months.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Dumfries, VA
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure
Dumfries, VA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Dumfries, VA
- Average wind speed in January:
6.7mph - Average wind speed in February:
6.9mph - Average wind speed in March:
7.1mph - Average wind speed in April:
7.1mph - Average wind speed in May:
6mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.3mph - Average wind speed in December:
6.1mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Dumfries, VA
The months with the highest relative humidity are October and December (78%).
The months with the lowest relative humidity are January, April and July (73%).
Average rainfall
Dumfries, VA
- Average rainfall in January:
1.97" - Average rainfall in February:
2.17" - Average rainfall in March:
2.56" - Average rainfall in April:
2.87" - Average rainfall in May:
3.15" - Average rainfall in June:
2.72"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days
Dumfries, VA
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
14.2 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
16 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
10.4 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is November (8.7 days).
Average snowfall
Dumfries, VA
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Dumfries, VA
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.4 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
1.8 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Dumfries, VA
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 48min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days
Dumfries, VA
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
20 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.5 days).
Average UV index
Dumfries, VA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Dumfries, VA
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Dumfries, VA
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
